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MYSQL 1Z0-874 Exam Syllabus Topics:

MYSQL MySQL 5.0 Database Administrator Certified Professional Exam, Part II Sample Questions:

1. Which of the following best describes the purpose of the join buffer, and when should you increase the size of it? (Choose three)

A) The join buffer is global and can only be changed by restarting the server.
B) The join buffer is set per-connection.
C) The value should be increased if the client performs a lot of SELECT operations.
D) The join buffer is used to process joins.
E) The join buffer is used to process sorts when complex joins are being performed.
F) The value should be increased if the client has the tendency to perform complex joins.

2. When choosing hardware for your MySQL server, is memory important to MySQL and why? (Choose two)

A) No, because MySQL makes use of virtual memory on disks.
B) Yes, because more memory allows for larger buffers improving caching and reducing disk usage
C) No, because MySQL makes more use of disks and processors than memory.
D) Yes, because more memory allows for less swapping by the operating system.

3. Doing SELECT COUNT(*) queries in InnoDB is efficient...

A) No, because InnoDB does not store a row count in the table.
B) No, because the table must be sorted.
C) Yes, if the table has any indexes.
D) Yes, because InnoDB stores a row count in the table.

4. Which of the following best describe some possible benefits of using RAID? (Choose four)

A) Read performance gains.
B) Better user-level security.
C) Write performance gains.
D) Hot-swappable disk drives.
E) Data redundancy.
F) Better memory and processor utilization.

5. Which of the following best describes what the connection backlog is and why it may need to be increased? (Choose two)

A) The backlog is the queue of processes waiting to be processed on a server.
B) The backlog is the queue of network connections of clients waiting to connect.
C) It may need to be increased on a server with a high rate of transactions.
D) It may need to be increased on a server with a high rate of client connections.

Solutions: